# HG changeset patch
# User Igor Sysoev <igor@sysoev.ru>
# Date 1238074477 0
# Node ID 2a301c21256adbb993cb2e4183728d518b0aed74
# Parent  2a35ed59827d2bca3ae17d5d158538282001e6fb
fix add_header Last-Modified "", broken in r2589

diff --git a/src/http/modules/ngx_http_headers_filter_module.c b/src/http/modules/ngx_http_headers_filter_module.c
--- a/src/http/modules/ngx_http_headers_filter_module.c
+++ b/src/http/modules/ngx_http_headers_filter_module.c
@@ -608,6 +608,11 @@ ngx_http_headers_add(ngx_conf_t *cf, ngx
         break;
     }
 
+    if (value[2].len == 0) {
+        ngx_memzero(&hv->value, sizeof(ngx_http_complex_value_t));
+        return NGX_CONF_OK;
+    }
+
     ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t));
 
     ccv.cf = cf;